Table 1. Parameters for Cohort Simulation of White and Black Women in the US With Postmenopausal Bleeding.

Parameter	Value		Source
	Black women	White women
Average US annual population (2012-2016), No.	8 213 830	49 299 503	US Census Bureau, 201726
Average annual No. of women with EC overall (2012-2016), No.	4462	32 246	National Cancer Institute, 201923
Endometrioid (type 1)	2848	27 926
Nonendometrioid (type 2)	1614	4320
Women with EC with PMB, %	90	90	ACOG, 20188; Goldstein et al, 200110; Clarke et al, 201811; Musonda et al, 201127
ET distribution for EC type 1, average %
<3 mm	0.6	0.7	ACOG, 20188; Gull et al, 200313; Karlsson et al, 199514; Ferrazzi et al, 199615; Wong et al, 201616; Phillip et al, 200424
3 mm	5.4	0.5
4 mm	5.8	1.0
5 mm	5.6	2.4
>5 mm	82.6	95.4
ET distribution for EC type 2, average %
<3 mm	9.2	9.2	Wang et al, 200618; Billingsley et al, 201519
3 mm	9.2	9.2
4 mm	9.2	9.2
5 mm	19.8	19.8
>5 mm	52.6	52.6
ET distribution for women without EC, average %
<3 mm	15.5	16.8	ACOG, 20188; Gull et al, 200313; Karlsson et al, 199514; Ferrazzi et al, 199615; Wong et al, 201616; Phillip et al, 200424
3 mm	18.5	19.0
4 mm	17.4	17.7
5 mm	10.5	8.5
>5 mm	38.1	38.1
% Women
With history of fibroids	74.0	42.0	Baird et al, 200320
With current fibroids with fibroid history	87.0	78.0	Baird et al, 200320
With current fibroids without fibroid history	60.0	43.0	Baird et al, 200320
% Of endometria visible
Without fibroids present	63.7	97.0	ACOG, 20188; Gull et al, 200313; Karlsson et al, 199514; Ferrazzi et al, 199615; Wong et al, 201616; Rotenberg et al, 201717
With fibroids present	50.6	83.9	ACOG, 20188; Gull et al, 200313; Karlsson et al, 199514; Ferrazzi et al, 199615; Wong et al, 201616; Rotenberg et al, 201717

Abbreviations: ACOG, American College of Obstetricians and Gynecologists; EC, endometrial cancer; ET, endometrial thickness; PMB, postmenopausal bleeding.